The problem being wishy that those theee empty seats- and lots of similar ones are seats of those who have moved to sit with the singers - at their request!
A further problem will be when it comes to renewals those who want to book the same seats- even if they never sit in them will get priority. Leaving those who have been displaced to wait to see what's left.
not sure how the club can deal with this- other than upset other fans by denying them the chance to book their usual seats.
Best you can do is go the day after seat renewals are no longer held.

Thing is there's others also vying for those seats. I've said to them that unless it's a bargain price again I can see a few newcomers not renewing so we might be in with a chance.
As for how the club could sort this why not a seat amnesty for those that want to congregate to sing allocating a block towards aisle 29 so that the singers allocated seats are close together easing the confusion of the seats often left empty but are still reserved. It would free up seats on the Middle aisle for the displaced. It would end the free for all that happens now as the last two matches I've seen groups having to constantly move as despite the giants reserved stickers just plonk themselves only to be then moved. One family I saw moved 5 times last match. And it's because there's been the mentality that you can sit where you want .

Because most of us up there have reserved seats, problem is people who don't sitting in reserved seats, this has never been a problem before but now there's 4 rows of displaced fans who still want to sit by their mates/family/singers having to be fitted in.

Surely it's up to the club to sort it out rather than just saying 'move somewhere else'.

God and I thought we'd got problems

Having a seat amnesty as you suggest means that as well as the four rows of people being displaced- those in the block allocated will also find themselves displaced- so even more disgruntled fans to add to yourself!
The main issue here is the fact that those that want to "be with the singers" want to sit at halfway and aren't prepared to move to one side - not sure where that block is you have specified but if a block is going to be allocated it needs to be one that currently isn't much used As I can't see how displacing even more fans would help the situation.