I have some thoughts here.
First - some measurables on Love:
Height: 5-10 3/4
Weight: 195
Arms: 31 3/4
Hands: 9
40: 4.50
10-yd: 1.59
20-yd: 2.57
SS: 4.10
3-Cone: 6.72
Vert: 36
Broad: 10-1
Bench: 14
He's not built in the mold of a traditional SS. Yes, the Seahawks have gone to more 2-high where the deep safeties don't have such defined roles like in the Cover-3 era with Kam and Earl. But both Adams and Neal are significantly bigger. If he's a hedge on Adams/Diggs if they were to be cut at some point for salary cap reasons, I would guess Diggs before Adams, with Neal being the hedge for Adams. Also, while we tagged Neal we don't know yet if he's definitely going to be back next year.
I think most likely he's going to be playing nickel. Bryant had an up-and-down year at nickel but he might be better suited to outside corner despite his shorter arms. Love's got good SS and 3-Cone times which are physical traits that traditional slot corners need because they don't have the sidelines to help them and they need to be able to change directions well. He's also known to be a good tackler. For comparison, Bryant ran a 4.33 SS, 7.31 3-Cone, 4.48 40 with a 1.56 10-yd split. Not sure where Tre Brown fits in, but I think generally speaking there will be great competition for LCB and Nickel in training camp, and there's plenty of depth in case of injury.
I think the big picture is this: The Seahawks want to commit more to three down linemen (3-4/3-3-5) more often than not. It was effective against the run but not so much against the pass. When they went to the 2-4-5 (to improve the pass one would assume) rush the run defense was terrible. Based on them stacking DB talent and not going as hard into the ILB market as expected considering Brooks is injured and Barton left, I'm going to guess that more often than not it will be a 3-3-5. To do that and still be able to defend the run, it's better if that extra DB is a good run defender rather than a corner like Justin Coleman, who was the epitome of the traditional nickel CB (blazing fast 3.98 SS and 6.61 3-Cone) but a serious liability in run defense.
So if they are going with the 3-3-5 using a big nickel, wouldn't Adams be the most likely candidate given his special talents around the LOS? I think that depends on the opponent and the offensive alignment. If it's more run-heavy like 22 or 12 personnel it probably means Adams plays closer to the LOS (or more traditional 3-4). If it's 11 or 10 then it should probably be Love (or dime). This is why Love's versatility is so key - he can play nickel against WRs but can also play deep. And the defense will have to guess because of that versatility. Also I think it should be said that Adams has that same versatility, he's just bigger and better (when healthy).
Lastly, for people (looking at you, Seahawks Twitter) who are upset about a) the changes on the D-Line, or b) signing Bobby instead or retaining Barton, I think one of the key things the Seahawks are doing is to try sign players who are effective against both run and pass. Sure, Woods and Poona played well in bear fronts against the run, but if the Seahawks are going to commit more to having 3 linemen they have to contribute against both the run and the pass. That tracks with the signings of Jones and Reed. Lots of people love Poona but he's never been a consistent impact player with his pass rush, regardless of where he's been played. Woods is a space-eating run stuffer. Conversely, Quinton Jefferson is a solid pass rusher but a liability against the run. The key here is versatility. The same goes for the LBs actually - the OLBs need to be able to cover and the ILBs need to be a blitzing threat (which is why I think Bobby could fit rather well). All of this makes things harder on the playcaller and the QB.