My idea to keep U.R.F around

So I just played my first urf game in an entire year and I was very very excited but after every game I couldn't help but think it will be gone again as fast as it came so I put on my thinking teemo cap and brained stormed an idea to keep urf around but of course at a price cause well face it were talking about riot here so here goes nothing I was thinking have people pay RP to play or a really large IP price alright alright before you shoot me down and dislike this just listen I was thinking buy a ticket to unlock urf for a day for let's say 250 rp or 5,000 ip or unlock it for an entire week for 2,000 rp or 20,000 ip but of course these prices are off the top of my head and if these sound familiar I took this idea from the ip bonus packs in the store but instead unlock urf or even other past game modes. Thanks for reading, Supa