Would it be a good idea to add a column with the highest progressive jackpots of each website?
Maybe also a column with any bonuses (like no-deposit bonusses), that might be a bit too much though...
Adding the progressive jackpot will be a bit complicated because the amount is always changing. So you need spend a lot of time to update it frequently.
But adding such kind of bonuses would be great and dont forget to give some details of it, like the wagering requirements etc.
I think I could manage updating it just once per week, that way it will stay somewhat accurate.
And yeah I'm now trying to gather all bonus information first, but things get a bit complicated with that, since there are usually multiple bonuses on each site...